Basin Wastewater Lagoon
Basin, WY · Big Horn County · Publicly Owned Treatment Works
- Average flow
- 0.55 MGD
- Design flow
- —
- NPDES permit
- WY0020028
- Effective
- Permit expires
- December 2026
- Population served
- —
- CWNS 2022
Basin Wastewater Lagoon is a publicly owned wastewater treatment works in Basin, Big Horn County, Wyoming treating an average of 0.55 million gallons per day. Treatment on site includes uncovered lagoons. It discharges under NPDES permit WY0020028 (effective), which expires in December 2026, with 38 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 38
- Effluent violations
- 35
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Basin Wastewater Lagoon, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Basin Wastewater Lagoon, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wyoming
Greybull · 8 mi away
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Manderson · 9 mi away
0.02 MGD
Worland · 26 mi away
0.71 MGD
Byron · 36 mi away
0.07 MGD
Ten Sleep · 38 mi away
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Powell · 43 mi away
2.09 MGD
Deaver · 44 mi away
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Meeteetse · 44 mi away
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Basin Wastewater Lagoon: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated April 13, 2025.